A system and method for underground cooling, softening and regeneration of high-temperature three-ash water in mines

Abstract

An underground cooling, softening and regeneration system for mine high-temperature three-ash water, including a return air heat exchange system arranged in an underground return air tunnel, the return air heat exchange system includes air inlets and air outlets at both ends of the tunnel, and at the top of the tunnel There is a spray pipe and a cold water tank at the bottom of the roadway; the cold water tank is connected to the automatic filter through the pipeline through the water pump, and the automatic filter is connected to the automatic water softener through the pipeline. The three-ash water is cooled by the mine return air, which avoids the damage of the underground thermal environment by the high-temperature three-ash water. The cooled three-ash water is softened by the automatic water softener, and the softened three-ash water can be directly used underground. It saves the power consumption and the investment of the transportation equipment for the three-ash water to be transported to the ground through the pump, avoids the waste of water resources caused by the water transportation from the outside of the well to the underground, saves water resources, and reduces the mining cost.

Description

Technical field: [0001] The invention relates to an underground cooling and softening regeneration system and method for high-temperature gray water in mines. Background technique: [0002] At present, there is a large amount of gray water in mines, which is characterized by high water temperature, calcium-magnesium carbonate-type water quality, alkaline, high hardness, good water quality, and no pollution. Due to the high temperature of the three-ash water, it is easy to damage the thermal environment in the well; due to the high hardness of the three-ash water, if it is directly used as underground production water, it will cause fouling and corrosion of the equipment, which will affect the cooling effect of the equipment. At the same time, with the work Surface extension, downhole pipelines are getting longer and longer, which will lead to periodic siphon water shortage in the main water supply pipeline for underground water, and then lead to strong pipeline vibration, wh...

AI Technical Summary

Problems solved by technology

Due to the high temperature of the three-ash water, it is easy to damage the thermal environment in the well; due to the high hardness of the three-ash water, if it is used directly as underground production water, it will cause scaling and corrosion of the equipment, which will affect the cooling effect of the equipment. At the same time, with the work Surface extension, the underground pipeline is getting longer and longer, which will lead to periodic siphon water shortage in the main water supply pipeline for underground water, and then lead to strong pipeline vibration, which will bring great hidden dangers to mine equipment

Therefore, the three-ash water cannot be directly used in the underground at present. Instead, it is necessary to install pipelines and supporting facilities in the well, underground and in the wellbore, and discharge it to the ground through pumps, which consumes a lot of electric energy and investment in transportation equipment.

In addition, firefighting and production water needs to be transported underground from the well, resulting in waste of water resources and greatly increasing mining costs

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